“无法在Windows中找到或加载spacespaceindex_c.dll？

Question

系统：Windows

版本：python 3.6

我已成功安装osmnx和Rtree。但是仍然有错误。

我的代码：

> import osmnx as ox
> from Ipython.display import Image

> ox.config(log_file=True,log_console=True,use_cache=True)
> 
> img_folder='image'; extension='png'; size=700
> 
> place='shanghai' point=(121.48,31.22) > 
> fig,ax=ox.plot_figure_ground(point=point,filename=place,network_type='all',dpi=150)
> Image('{}/{}.{}'.fromat(img_folder,place,extension),height=size,width=size)

raise OSError（“找不到或加载spatialindex_c.dll”）

OSError：找不到或加载spatialindex_c.dll

这是什么意思，是什么原因造成的，以及应该如何解决？

Answer 1

这意味着您仅以为您已经成功安装了osmnx或其依赖项之一。

当然，很大程度上取决于您安装的osmnx-当我在虚拟环境中尝试使用pip时，它对我造成了失败：

Collecting OSMnx
  Downloading osmnx-0.5.3-py2.py3-none-any.whl (54kB)
    100% |████████████████████████████████| 61kB 183kB/s
Collecting shapely>=1.5 (from OSMnx)
  Downloading Shapely-1.6.0.tar.gz (214kB)
    100% |████████████████████████████████| 215kB 2.0MB/s
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "C:\Users\STEVE-~1\AppData\Local\Temp\pip-build-9uqvlpcm\shapely\setup.py", line 80, in <module>
        from shapely._buildcfg import geos_version_string, geos_version, \
      File "C:\Users\STEVE-~1\AppData\Local\Temp\pip-build-9uqvlpcm\shapely\shapely\_buildcfg.py", line 200, in <module>
        lgeos = CDLL("geos_c.dll")
      File "C:\Python36_64\lib\ctypes\__init__.py", line 344, in __init__
        self._handle = _dlopen(self._name, mode)
    OSError: [WinError 126] The specified module could not be found

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in C:\Users\STEVE-~1\AppData\Local\Temp\pip-build-9uqvlpcm\shapely\

转到http://www.lfd.uci.edu/~gohlke/pythonlibs/#shapely给了我我正在使用的
3.6（64位）

的python的下载，通过下载然后在下载的文件上使用pip进行安装。[重新运行pip install OSMnx，我的下一个问题是与fiona的编译有关，因此Chris Gohlke在http://www.lfd.uci.edu/~gohlke/pythonlibs/#fiona再次进行了救援，其中有一个音符为“需要gdal”，所以我跳到了http://www.lfd.uci.edu/~gohlke/pythonlibs/#gdal，然后我在那里安装了首先。

在运行您的第一次导入时，我得到：

>>> import osmnx as ox
Traceback (most recent call last):
  File "F:\toolbuild\test_OSMnx\lib\site-packages\numpy\core\__init__.py", line 16, in <module>
    from . import multiarray
ImportError: DLL load failed: The specified procedure could not be found.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "F:\toolbuild\test_OSMnx\lib\site-packages\osmnx\__init__.py", line 8, in <module>
    from .buildings import *
  File "F:\toolbuild\test_OSMnx\lib\site-packages\osmnx\buildings.py", line 9, in <module>
    import geopandas as gpd
  File "F:\toolbuild\test_OSMnx\lib\site-packages\geopandas\__init__.py", line 1, in <module>
    from geopandas.geoseries import GeoSeries
  File "F:\toolbuild\test_OSMnx\lib\site-packages\geopandas\geoseries.py", line 5, in <module>
    import numpy as np
  File "F:\toolbuild\test_OSMnx\lib\site-packages\numpy\__init__.py", line 142, in <module>
    from . import add_newdocs
  File "F:\toolbuild\test_OSMnx\lib\site-packages\numpy\add_newdocs.py", line 13, in <module>
    from numpy.lib import add_newdoc
  File "F:\toolbuild\test_OSMnx\lib\site-packages\numpy\lib\__init__.py", line 8, in <module>
    from .type_check import *
  File "F:\toolbuild\test_OSMnx\lib\site-packages\numpy\lib\type_check.py", line 11, in <module>
    import numpy.core.numeric as _nx
  File "F:\toolbuild\test_OSMnx\lib\site-packages\numpy\core\__init__.py", line 26, in <module>
    raise ImportError(msg)
ImportError:
Importing the multiarray numpy extension module failed.  Most
likely you are trying to import a failed build of numpy.
If you're working with a numpy git repo, try `git clean -xdf` (removes all
files not under version control).  Otherwise reinstall numpy.

Original error was: DLL load failed: The specified procedure could not be found.

[我已经注意到numpy似乎已正确安装，但我知道它可能存在问题，因此转到http://www.lfd.uci.edu/~gohlke/pythonlibs/#numpy，我们在其中找到了一条注释：“ Numpy + MKL已链接到英特尔®数学内核库，并且包括numpy.core目录中的必需DLL。”因此，我再次下载并安装。

现在我正在您的阶段：

> import osmnx as ox
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "F:\toolbuild\test_OSMnx\lib\site-packages\osmnx\__init__.py", line 8, in <module>
    from .buildings import *
  File "F:\toolbuild\test_OSMnx\lib\site-packages\osmnx\buildings.py", line 9, in <module>
    import geopandas as gpd
  File "F:\toolbuild\test_OSMnx\lib\site-packages\geopandas\__init__.py", line 1, in <module>
    from geopandas.geoseries import GeoSeries
  File "F:\toolbuild\test_OSMnx\lib\site-packages\geopandas\geoseries.py", line 16, in <module>
    from geopandas.base import GeoPandasBase
  File "F:\toolbuild\test_OSMnx\lib\site-packages\geopandas\base.py", line 15, in <module>
    from rtree.core import RTreeError
  File "F:\toolbuild\test_OSMnx\lib\site-packages\rtree\__init__.py", line 1, in <module>
    from .index import Rtree
  File "F:\toolbuild\test_OSMnx\lib\site-packages\rtree\index.py", line 5, in <module>
    from . import core
  File "F:\toolbuild\test_OSMnx\lib\site-packages\rtree\core.py", line 116, in <module>
    raise OSError("could not find or load spatialindex_c.dll")
OSError: could not find or load spatialindex_c.dll

似乎问题出在RTree中，所以转到http://www.lfd.uci.edu/~gohlke/pythonlibs/#rtree 
（请注意，这一次我们必须先pip uninstall rtree）

尝试您的代码，

添加了几个换行符，

再次，我收到一个错误，该错误超出了最长限制，因此交换两个值来设置point=(31.22, 121.48)并得到如下图像：来自：

>>> fig,ax=ox.plot_figure_ground(point=point,filename=place,network_type='all',dpi=150)
Projected the GeoDataFrame "geometry to project" to UTM-51 in 0.00 seconds
Projected the GeoDataFrame "geometry to project" to EPSG 4326 in 0.00 seconds
Created bounding box 966.0 meters in each direction from (31.22, 121.48): 31.228713053594067,31.211286934028642,121.49013858668467,121.46986147388169
Projected the GeoDataFrame "geometry to project" to UTM-51 in 0.00 seconds
Projected the GeoDataFrame "geometry to project" to EPSG 4326 in 0.00 seconds
Requesting network data within bounding box from API in 1 request(s)
Pausing 0.00 seconds before making API POST request
Posting to http://www.overpass-api.de/api/interpreter with timeout=180, "{'data': '[out:json][timeout:180];(way["highway"]["area"!~"yes"]["highway"!~"proposed|construction|abandoned|platform|raceway"]["service"!~"private"]["access"!~"private"](31.21128693,121.46986147,31.22871305,121.49013859);>;);out;'}"
Downloaded 480.6KB from www.overpass-api.de in 2.13 seconds
Saved response to cache file "cache/8c99e35743a557d7234621c6d3fd7139.json"
Got all network data within bounding box from API in 1 request(s) and 2.99 seconds
Creating networkx graph from downloaded OSM data...
Graph was not connected, retained only the largest weakly connected component (3,366 of 3,540 total nodes) in 0.15 seconds
Created graph with 3,366 nodes and 6,926 edges in 0.19 seconds
Added edge lengths to graph in 0.05 seconds
Truncated graph by bounding box in 0.14 seconds
Removed 0 isolated nodes
Graph was not connected, retained only the largest weakly connected component (2,764 of 2,779 total nodes) in 0.13 seconds
graph_from_bbox() returning graph with 2,764 nodes and 5,892 edges
graph_from_point() returning graph with 2,764 nodes and 5,892 edges
Begin topologically simplifying the graph...
Identified 1,568 edge endpoints in 0.04 seconds
Constructed all paths to simplify in 0.01 seconds
Simplified graph (from 2,764 to 1,568 nodes and from 5,892 to 3,730 edges) in 0.15 seconds
Created a GeoDataFrame from graph in 0.10 seconds
Projected the GeoDataFrame "unnamed_nodes" to UTM-51 in 0.07 seconds
Projected the GeoDataFrame "unnamed_edges" to UTM-51 in 0.29 seconds
Extracted projected node geometries from GeoDataFrame in 0.04 seconds
Rebuilt projected graph in 1.53 seconds
Projected the GeoDataFrame "geometry to project" to UTM-51 in 0.00 seconds
Created bounding box 805 meters in each direction from (31.22, 121.48) and projected it: 3455784.445871858,3454174.445871858,356022.8750159489,354412.8750159489
Begin plotting the graph...
Drew the graph edges in 0.05 seconds
Saved the figure to disk in 0.11 seconds

Answer 2

[如果您正在使用Anaconda，则安装OSMnx并避免此问题的最简单方法是使用conda-forge，如the docs中所述：

Answer 3

我有同样的问题“could not find or load spatialindex_c.dll”。